Add special version identification and Gentoo contact information,
in order to fulfil provisions 2 through 4 of the gnuplot licence.

diff -Naur gnuplot-4.4.0-rc1.orig/docs/gnuplot.doc gnuplot-4.4.0-rc1/docs/gnuplot.doc
--- gnuplot-4.4.0-rc1.orig/docs/gnuplot.doc	2009-12-13 14:16:41.000000000 +0100
+++ gnuplot-4.4.0-rc1/docs/gnuplot.doc	2009-12-13 14:31:57.000000000 +0100
@@ -204,6 +204,8 @@
 
  Bug reports and code contributions should be uploaded to the trackers at
            http://sourceforge.net/projects/gnuplot/support
+ and
+           http://bugs.gentoo.org/
  Please check previous bug reports if the bug you want to report has not been
  already fixed in a newer version of gnuplot.
 
diff -Naur gnuplot-4.4.0-rc1.orig/docs/gnuplot.texi gnuplot-4.4.0-rc1/docs/gnuplot.texi
--- gnuplot-4.4.0-rc1.orig/docs/gnuplot.texi	2009-12-13 14:16:41.000000000 +0100
+++ gnuplot-4.4.0-rc1/docs/gnuplot.texi	2009-12-13 14:31:57.000000000 +0100
@@ -319,6 +319,11 @@
 @example
       gnuplot --help
 @end example
+and
+@example
+      http://bugs.gentoo.org/
+
+@end example
 
 See `command line options` for more details.
 
diff -Naur gnuplot-4.4.0-rc1.orig/src/plot.c gnuplot-4.4.0-rc1/src/plot.c
--- gnuplot-4.4.0-rc1.orig/src/plot.c	2009-12-13 14:16:41.000000000 +0100
+++ gnuplot-4.4.0-rc1/src/plot.c	2009-12-13 14:34:38.000000000 +0100
@@ -374,9 +374,11 @@
 		    "  -h, --help\n"
 		    "  -p  --persist\n"
 		    "  -e  \"command1; command2; ...\"\n"
-		    "gnuplot %s patchlevel %s\n"
-		    "Report bugs to %s\n",
-		    gnuplot_version, gnuplot_patchlevel, bug_report);
+		    "gnuplot %s patchlevel %s (Gentoo revision %s)\n"
+		    "Report bugs to <%s>\n"
+		    "or to <%s>\n",
+		    gnuplot_version, gnuplot_patchlevel, gentoo_revision,
+		    gentoo_bugtracker, bug_email);
 	    return 0;
 
 	} else if (!strncmp(argv[i], "-persist", 2) || !strcmp(argv[i], "--persist")) {
diff -Naur gnuplot-4.4.0-rc1.orig/src/show.c gnuplot-4.4.0-rc1/src/show.c
--- gnuplot-4.4.0-rc1.orig/src/show.c	2009-12-13 14:16:41.000000000 +0100
+++ gnuplot-4.4.0-rc1/src/show.c	2009-12-13 14:31:57.000000000 +0100
@@ -1017,7 +1017,7 @@
     strcpy(fmt, "\
 %s\n\
 %s\t%s\n\
-%s\tVersion %s patchlevel %s\n\
+%s\tVersion %s patchlevel %s (Gentoo revision %s)\n\
 %s\tlast modified %s\n\
 %s\tSystem: %s %s\n\
 %s\n\
@@ -1038,7 +1038,7 @@
     fprintf(fp, fmt,
 	    p,			/* empty line */
 	    p, PROGRAM,
-	    p, gnuplot_version, gnuplot_patchlevel,
+	    p, gnuplot_version, gnuplot_patchlevel, gentoo_revision,
 	    p, gnuplot_date,
 	    p, os_name, os_rel,
 	    p,			/* empty line */
diff -Naur gnuplot-4.4.0-rc1.orig/src/version.c gnuplot-4.4.0-rc1/src/version.c
--- gnuplot-4.4.0-rc1.orig/src/version.c	2009-12-13 14:16:41.000000000 +0100
+++ gnuplot-4.4.0-rc1/src/version.c	2009-12-13 14:31:57.000000000 +0100
@@ -44,6 +44,9 @@
 const char gnuplot_date[] = "Sat Nov 28 14:34:01 PST 2009";
 const char gnuplot_copyright[] = "Copyright (C) 1986-1993, 1998, 2004, 2007-2009";
 
+const char gentoo_revision[] = GENTOO_REVISION;
+const char gentoo_bugtracker[] = "http://bugs.gentoo.org/";
+
 char *compile_options = (void *)0;	/* Will be loaded at runtime */
 
 # ifndef FAQ_LOCATION
diff -Naur gnuplot-4.4.0-rc1.orig/src/version.h gnuplot-4.4.0-rc1/src/version.h
--- gnuplot-4.4.0-rc1.orig/src/version.h	2009-12-13 14:16:41.000000000 +0100
+++ gnuplot-4.4.0-rc1/src/version.h	2009-12-13 14:31:57.000000000 +0100
@@ -48,6 +48,9 @@
 extern const char bug_email[];
 extern const char help_email[];
 
+extern const char gentoo_revision[];
+extern const char gentoo_bugtracker[];
+
 extern char os_name[];
 extern char os_rel[];